EP0971077B1 - Couvercle de protection pour machine de construction - Google Patents

Couvercle de protection pour machine de construction Download PDF

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Publication number
EP0971077B1
EP0971077B1 EP98961586A EP98961586A EP0971077B1 EP 0971077 B1 EP0971077 B1 EP 0971077B1 EP 98961586 A EP98961586 A EP 98961586A EP 98961586 A EP98961586 A EP 98961586A EP 0971077 B1 EP0971077 B1 EP 0971077B1
Authority
EP
European Patent Office
Prior art keywords
guard cover
guard
cover
devices
construction machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98961586A
Other languages
German (de)
English (en)
Other versions
EP0971077A4 (fr
EP0971077A1 (fr
Inventor
Isao Yutani Heavy Industries Ltd. MIYACHI
Sintaro Yutani Heavy Industries Ltd. SAKITANI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of EP0971077A1 publication Critical patent/EP0971077A1/fr
Publication of EP0971077A4 publication Critical patent/EP0971077A4/fr
Application granted granted Critical
Publication of EP0971077B1 publication Critical patent/EP0971077B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0891—Lids or bonnets or doors or details thereof

Definitions

  • the present invention relates to a guard cover for a construction machine and more particularly a guard cover for protecting devices to be subjected to inspection or servicing which devices are gathered on a revolving frame as a base of a rotatable superstructure in a construction machine such as a hydraulic excavator, the guard cover being constructed so as to be opened at the time of inspection, repair and maintenance.
  • various devices and pipes are disposed on a revolving frame of a rotatable superstructure, such as hydraulic actuators for actuating a front attachment and a lower carriage, a hydraulic pump for supplying a hydraulic oil to each of the actuators, and an engine unit for actuating the hydraulic pump.
  • hydraulic actuators for actuating a front attachment and a lower carriage
  • hydraulic pump for supplying a hydraulic oil to each of the actuators
  • engine unit for actuating the hydraulic pump.
  • a guard cover capable of being opened vertically through a hinge is mounted at a front part of the revolving frame which is positioned sideways of a boom support portion of the front attachment and on the side opposite to a cabin.
  • control valve for controlling the flow rate and direction of hydraulic oil to be fed to each hydraulic actuator
  • operation pattern change-over valve for changing over from one correlation to another between the operating direction of an operating lever and a hydraulic actuator operated thereby
  • filter for changing over from one correlation to another between the operating direction of an operating lever and a hydraulic actuator operated thereby
  • inspection works such as inspection of the amount of oil in the fuel tank, inspection of the amount of hydraulic oil, and inspection of the battery, as well as the operation of the operation pattern change-over valve, are performed mainly by the operator of the hydraulic excavator.
  • servicing works such as checking oil leakage of the control valve, hydraulic oil tank and hose, and additional clamping of a pipe portion mounted to the control valve, are performed mainly by a serviceman sent from a manufacturing company of the hydraulic excavator.
  • the works carried out with the guard cover open are classified into the inspection works performed by the operator of the hydraulic excavator and the servicing works performed by a serviceman.
  • guard cover as a constituent of an outer shell of a rotatable superstructure, which guard cover is formed integrally in an inverted U shape in section from an upper surface toward both side faces of the outer shell, the whole of the guard cover, which is bulky, must be opened even when inspection alone is to be conducted. Besides, in such a bulky guard cover, a support frame for supporting the guard cover must be extended from the revolving frame of the rotatable superstructure and it has so far been an obstacle to the inspection or servicing work.
  • US-A-5 634 525 discloses a rear hinged pivotable hood for enclosing a tractor engine in which access, between a closed in which the engine is inaccessibly covered and an opened position in which the engine is accesible, is provided.
  • the engine hood includes a primary hood member that is pivotably moveable about the hinge axis and a fixed portion that includes a pair of laterally spaced daily access doors pivotally mounted for outward movement to allow access to preselected, frequently accessed, service components of the engine.
  • the present invention has been accomplished in view of the above-mentioned problems encountered in the conventional hydraulic excavator guard cover and it is an object of the invention to provide a guard cover for a construction machine which can be opened separately at a required portion thereof according to an inspecting or servicing work and which therefore can greatly improve the inspecting or servicing work efficiency.
  • a guard cover for a construction machine to be used for protecting devices which are gathered in a certain portion of the construction machine and which protect devices to be subjected to inspection or servicing wherein the guard cover comprises a first guard cover which covers said devices from both front and upper surface sides of the devices and which is constructed so as to be capable of being opened and closed vertically through a hinge secured to a rear end portion of the first guard cover; and a second guard cover which covers the devices from a side of the devices and which is constructed so as to be capable of being opened and closed in the transverse direction through a hinge secured to a rear end portion of the second guard cover, and Wherein the second guard cover is constructed so as to become contiguous to the first guard cover when closed and support a lower end portion of the first guard cover.
  • the first and second guard covers be divided at the boundary between an inspection range for the devices to be inspected and a servicing range for the devices for servicing.
  • the guard covers can be opened one after the other for inspection or for servicing, so for the devices to be inspected by the operator, the inspecting operation can be done within the opened area of the first guard cover, and for the devices for servicing such as repair to be done by a serviceman, the servicing operation can be done within the opened area of the second guard cover.
  • the objects to be inspected by the operator and those for servicing by the serviceman are clearly distinguished from each other, giving rise to an advantage that the efficiency of the inspecting and servicing works is greatly improved.
  • the inspecting and servicing works become easier because there is no such reinforcing frame as will be an obstacle.
  • a buffer member be attached to the upper edge of the side plate portion of the second guard cover which supports the lower edge of the side plate portion of the first guard cover.
  • the first guard cover when closed can be cushioned by the second guard cover, thus preventing the first guard cover from being deformed by a closing shock.
  • the first guard cover be formed of a resin and the second guard cover be formed by a steel plate.
  • the use of a resin for the first guard cover is advantageous in that the resulting reduction in weight of the guard cover facilitates the cover opening and closing motions at the time of inspection for example.
  • the first guard cover may be of a hollow double-shell structure obtained by a rotational molding of a resin. If such a hollow structure formed by a rotational molding is utilized, not only a voluminous guard cover of a complicated shape can be fabricated easily, but also it is possible to attain the reduction of weight.
  • the reference numeral 1 denotes a rotatable superstructure of a hydraulic excavator.
  • a revolving frame 2 which serves as a base of the rotatable superstructure, are installed an engine 3 as a hydraulic pump drive source, a radiator 4 for preventing overheat of the engine 3, a counterweight 5, and a hydraulic pipe (not shown).
  • a cab 6 for getting therein of the operator of the hydraulic excavator, while on a right-hand front portion of the revolving frame are gathered devices which are to be inspected periodically or at the time of start-up of the hydraulic excavator, as well as devices to be subjected to servicing, including repair and maintenance.
  • the devices for inspection or servicing include a hydraulic oil tank 7 to be checked for the amount of oil, a fuel tank 8 to be checked also for the amount of oil, a battery 9 to be checked for the state of the battery, a control valve 10 to be checked for oil leakage, an operation pattern change-over valve 11 which makes sure how the operating direction of an operating lever and the hydraulic actuator operated thereby are correlated with each other, and a pipe connection of a hydraulic device.
  • the numeral 12 denotes a first guard cover, which constitutes a part of the outer shell of the rotatable superstructure.
  • the first guard cover 12 is curved from the front face of the said outer shell and is contiguous to the upper surface of the outer shell to constitute both right-hand front plate portion and upper plate portion of the outer shell.
  • the section of the first guard cover 12 is in an inverted U shape.
  • the first guard cover 12 can be opened and closed in the vertical direction (in the boom rising and falling direction like arrow A in the figure) through a hinge 12a secured to a rear end portion of the first guard cover.
  • the first guard cover 12 is formed of a resin.
  • a second guard cover 13 is formed in the shape of a door by pressing a steel plate so as to form the outer shell side plate on the right-hand front portion of the rotatable superstructure 1 and it can be opened and closed in the right and left direction (in the width direction of the rotatable superstructure like arrow B in the figure) through a pair of hinges 13a attached to a rear end portion of the second guard cover.
  • guard cover composed of the first and second guard covers 12, 13, when the first guard cover 12 is closed after closing the second guard cover 13, a lower edge portion 12b of the first guard cover comes into abutment against an upper edge portion 13a of the second guard cover, whereby both guard covers 12 and 13 are connected together so as to be flush with each other.
  • first guard cover 12 The construction of the first guard cover 12 and that of the second guard cover 13 will be described below in more detail.
  • the first guard cover 12 has a double-shell hollow structure obtained by a rotational molding of a polyethylene resin.
  • a total plate thickness, t, of the first guard cover 12 is 80 mm and the thickness of an outer shell (inner shell) 12c is 4 mm.
  • the second guard cover 13 has the upper edge portion 13a formed so as to be opposed to the lower edge portion 12b (see FIG.2) of the first guard cover 12.
  • a long weather strip 14 made of rubber, as shown in FIG.4.
  • a cylindrical portion 14a is integral with an outer peripheral portion of the weather strip 14 and it serves as a buffer member when the first guard cover 12 is closed.
  • the upper edge portion 13a of the second guard cover 13 can softly bear the lower edge portion 12b of the first guard cover 12 when closed and, after closing, can support the first guard cover.
  • a lower edge portion 12d (see FIG.2) of the first guard cover 12 is supported by a fixed outer shell side plate (not shown) mounted vertically from the revolving frame 2, which cover is also provided at its upper edge portion with a weather strip of the same structure as in FIG.4 and having the cylindrical portion 14a.
  • the lower edge portions 12b and 12d of the first guard cover are supported by the second guard cover 13 and the fixed outer shell side plate, respectively, so the operator can get on the first guard cover 12 and check the front attachment for example.
  • 13b', 13b' represent mounting positions of the hinges 13b secured to the rear end portion of the second guard cover 13.
  • the first and second guard covers 12, 13 are each provided with a lock mechanism adapted to lock the revolving frame 2 and the first guard cover unlockably.
  • the lock mechanism there may be utilized a known lock mechanism wherein a hook attached to the front lower end of, for example, the first guard cover is brought into engagement with an engaging hole formed in the revolving frame.
  • both first and second covers 12, 13 are opened, all of the devices protected by both covers are exposed. Besides, with both guard covers opened, it is possible to effect inspection and servicing of the devices in a simple manner from both front and side because the support frame which has been used to support the guard cover of the conventional structure is not present.
  • the first guard cover used in the above embodiment is of a hollow double-shell structure obtained by a rotational molding, no limitation is made thereto.
  • the first guard cover may be constituted by an FRP cover or may be constituted by pressing a steel plate.
  • guard cover of the above embodiment was applied to a hydraulic excavator, the present invention is not limited thereto.
  • the invention is also applicable to such a construction machine as a crane.
  • the guard cover for a construction machine is useful as a guard cover in the rotatable superstructure of a hydraulic excavator or of a crane.
  • the guard cover is suitable for the protection of devices to be subjected to inspection or servicing.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Superstructure Of Vehicle (AREA)

Abstract

Un couvercle de protection comprend un premier couvercle de protection (12) recouvrant un dispositif d'inspection par l'avant et le dessus et pouvant s'ouvrir verticalement ainsi qu'un second couvercle de protection (13) recouvrant, lorsqu'il est fermé, un dispositif d'entretien sur le côté de manière continue avec le premier couvercle de protection, portant le premier couvercle, et pouvant être ouvert horizontalement. Par conséquent, les couvercles de protection peuvent être ouverts séparément. Ainsi, le dispositif d'inspection peut être inspecté par un opérateur lorsque le premier couvercle de protection (12) est ouvert et le dispositif d'entretien est contrôlé par un technicien d'entretien lorsque le second couvercle de protection (13) est ouvert. L'objet à inspecter et l'objet à entretenir sont clairement distingués l'un de l'autre par les couvercles de protection, ce qui permet d'améliorer grandement les efficacités d'inspection et d'entretien.

Claims (6)

  1. Capot de protection pour machine de construction destiné à être utilisé pour protéger des dispositifs qui sont regroupés dans une certaine partie de la machine de construction et qui protègent des dispositifs à soumettre au contrôle ou à l'entretien, ledit capot de protection comprenant :
    un premier capot de protection (12) qui recouvre lesdits dispositifs à partir des côtés de surface avant et supérieure des dispositifs et qui est construit afin de pouvoir être ouvert et fermé verticalement par l'intermédiaire d'une charnière (12a) fixée à une partie d'extrémité arrière du premier capot de protection ; et
    un second capot de protection (13) qui recouvre lesdits dispositifs à partir d'un côté des dispositifs et qui est construit afin de pouvoir être ouvert et fermé dans la direction transversale par l'intermédiaire d'une charnière (13a) fixée sur une partie d'extrémité arrière du second capot de protection, caractérisé en ce que ledit second capot de protection est construit afin d'être contigu audit premier capot de protection lorsqu'il est fermé et de supporter une partie d'extrémité inférieure du premier capot de protection (12).
  2. Capot de protection pour machine de construction selon la revendication 1, dans lequel lesdits premier et second capots de protection sont construits afin d'être divisés le long d'une limite située entre une plage de contrôle pour les dispositifs à soumettre au contrôle et une plage d'entretien pour les mécanismes d'entraínement à soumettre à l'entretien.
  3. Capot de protection pour machine de construction selon la revendication 1 ou la revendication 2, dans lequel on prévoit un élément tampon (14a) pour absorber une force d'impact développée lors de la fermeture dudit premier capot de protection (12) au niveau d'une partie de bord supérieur dudit second capot de protection (13) qui supporte le premier capot de protection.
  4. Capot de protection pour machine de construction selon la revendication 1 ou la revendication 2, dans lequel ledit premier capot de protection est formé en utilisant une résine et ledit second capot de protection est formé avec une tôle d'acier.
  5. Capot de protection pour machine de construction selon la revendication 4, dans lequel ledit premier capot de protection a une structure creuse à deux coques, formée par un moulage rotationnel.
  6. Machine de construction comprenant un capot de protection selon l'une quelconque des revendications 1 à 5.
EP98961586A 1997-12-26 1998-12-25 Couvercle de protection pour machine de construction Expired - Lifetime EP0971077B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP36114597A JP3533077B2 (ja) 1997-12-26 1997-12-26 建設機械用ガードカバー
JP36114597 1997-12-26
PCT/JP1998/005942 WO1999034064A1 (fr) 1997-12-26 1998-12-25 Couvercle de protection pour machine de construction

Publications (3)

Publication Number Publication Date
EP0971077A1 EP0971077A1 (fr) 2000-01-12
EP0971077A4 EP0971077A4 (fr) 2001-02-14
EP0971077B1 true EP0971077B1 (fr) 2005-10-12

Family

ID=18472385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98961586A Expired - Lifetime EP0971077B1 (fr) 1997-12-26 1998-12-25 Couvercle de protection pour machine de construction

Country Status (6)

Country Link
US (1) US6135223A (fr)
EP (1) EP0971077B1 (fr)
JP (1) JP3533077B2 (fr)
KR (1) KR20000075513A (fr)
DE (1) DE69831863T2 (fr)
WO (1) WO1999034064A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6374936B1 (en) * 2000-07-20 2002-04-23 Deere & Company Hood closure guide and seal
JP4019992B2 (ja) * 2003-03-27 2007-12-12 コベルコ建機株式会社 カウンタウエイト取付構造
JP3956913B2 (ja) * 2003-07-01 2007-08-08 コベルコ建機株式会社 作業機械
GB2418899B (en) * 2004-10-08 2008-01-02 Linde Material Handling Industrial truck
JP4515232B2 (ja) * 2004-11-22 2010-07-28 株式会社クボタ 旋回作業機
JP5061085B2 (ja) * 2008-11-17 2012-10-31 株式会社クボタ 旋回作業機のボンネットシール構造
JP5353795B2 (ja) * 2010-03-31 2013-11-27 コベルコ建機株式会社 作業機械
JP5821872B2 (ja) * 2013-02-22 2015-11-24 コベルコ建機株式会社 建設機械の吸気構造
US20180179729A1 (en) * 2016-12-28 2018-06-28 Cnh Industrial America Llc Accessory mounting system for a work vehicle
US10281054B2 (en) 2017-09-15 2019-05-07 Caterpillar Inc. Valve guard for valve assembly
CN108005142B (zh) * 2017-12-18 2020-11-10 潍坊友容实业有限公司 盐碱地开沟机工作头保护罩

Citations (1)

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Publication number Priority date Publication date Assignee Title
US5634525A (en) * 1994-10-05 1997-06-03 New Holland North America, Inc. Split engine hood for tractors

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US4415052A (en) * 1981-09-08 1983-11-15 Deere & Company Engine compartment enclosure
JPS60197448A (ja) * 1984-03-21 1985-10-05 Toyoda Gosei Co Ltd ウエザ−ストリツプ
US4770263A (en) * 1985-12-25 1988-09-13 Nissan Motor Co., Ltd. Body constuction of industrial vehicle
SU1652165A1 (ru) * 1989-05-23 1991-05-30 Производственное объединение "Волгоградский тракторный завод им.Ф.Э.Дзержинского" Капот двигател транспортного средства
US5341926A (en) * 1993-08-30 1994-08-30 Leben David G Container for carrying and transporting computer tape cartridges
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JPH07197488A (ja) * 1993-12-28 1995-08-01 Komatsu Ltd 油圧ショベルの外装カバー
JP2945576B2 (ja) * 1994-01-17 1999-09-06 株式会社クボタ バックホウのボンネット構造
JP2619338B2 (ja) * 1995-01-31 1997-06-11 新キャタピラー三菱株式会社 建設機械のダストカバー構造
JP2938782B2 (ja) * 1995-03-08 1999-08-25 株式会社クボタ バックホウのボンネット構造
JP3572719B2 (ja) * 1995-05-16 2004-10-06 コベルコ建機株式会社 油圧作業機
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US5634525A (en) * 1994-10-05 1997-06-03 New Holland North America, Inc. Split engine hood for tractors

Also Published As

Publication number Publication date
WO1999034064A1 (fr) 1999-07-08
EP0971077A4 (fr) 2001-02-14
DE69831863D1 (de) 2006-02-23
KR20000075513A (ko) 2000-12-15
DE69831863T2 (de) 2006-07-13
JPH11190045A (ja) 1999-07-13
JP3533077B2 (ja) 2004-05-31
EP0971077A1 (fr) 2000-01-12
US6135223A (en) 2000-10-24

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